Pen



FIG. 1 is a perspective view of the first embodiment of a pen;

FIG. 2 is a right side elevational view of the first embodiment of the pen of FIG. 1;

FIG. 3 is a back side elevational view of the first embodiment of the pen of FIG. 1;

FIG. 4 is a front side elevational view of the first embodiment of the pen of FIG. 1;

FIG. 5 is a bottom plan view of the first embodiment of the pen of FIG. 1; and,

FIG. 6 is a top plan view of the first embodiment of the pen of FIG. 1.

FIG. 7 is a perspective view of a further embodiment of a pen;

FIG. 8 is a right side elevational view of a further embodiment of the pen of FIG. 7;

FIG. 9 is a back side elevational view of a further embodiment of the pen of FIG. 7;

FIG. 10 is a front side elevational view of a further embodiment of the pen of FIG. 7;

FIG. 11 is a bottom plan view of a further embodiment of the pen of FIG. 7; and,

FIG. 12 is a top plan view of a further embodiment of the pen of FIG. 7.

The broken lines representing the clip of the pen in FIGS. 7 through 12 are for illustrative purposes and form no part of the claimed design. 

The ornamental design for a pen, as shown and described. 